Come analizzare i risultati delle righe da $ wpdb -> get_results

 foreach( $wpdb->get_results("SELECT * FROM your_table_name WHERE id LIKE' . $id . ';") as $key => $row) {
// each column in your row will be accessible like this
$my_column = $row->column_name;}
 

Maggioriinformazioni qui

foreach( $wpdb->get_results("SELECT * FROM your_table_name WHERE id LIKE' . $id . ';") as $key => $row) {
// each column in your row will be accessible like this
$my_column = $row->column_name;}

More info here

Prova sempreil codice WordPress: http://codex.wordpress.org/Class_Reference/wpdb#SELECT_Generic_Results

Essenzialmente data la sintassipredefinita,la variabile $ row qui è un oggetto contenentei risultati.In alternativa,puoi specificareil TIPO di risultato (matricenumerica,matrice associativa).

Supponendo un solo risultato,$ row->ide $ row->name dovrebberofornirti leinformazioni.

Se ottienipiù di un risultato,ti consigliamo di ripetere le vocinell'oggetto.

Seti aspetti solo una rigaindietro,prova a utilizzare $ wpdb->get_row http://codex.wordpress.org/Class_Reference/wpdb#SELECT_a_Row

Always Try the WordPress Codex: http://codex.wordpress.org/Class_Reference/wpdb#SELECT_Generic_Results

Essentially given the default syntax, the variable $row here is an object containing your results. You could alternately specify the TYPE of result (numeric array, associative array).

Assuming just one result, then $row->id and $row->name should give you the information.

If you get back more than one result, you'd want to loop over the entries in the object.

If you are expecting just one row back, then try using $wpdb->get_row http://codex.wordpress.org/Class_Reference/wpdb#SELECT_a_Row

Da utilizzare come array associativo:

 $obj=[];
$rows =  $wpdb->get_results( 'SELECT * FROM `tbl_name` WHERE `id` = '.$obj_id , ARRAY_A);
foreach($rows as $row){  $obj=$row; break; }

// $obj is now the selected row if a match was found
 

Utilizzo

 $something = $obj['column_name'];
foreach($obj as $col => $val)
    echo $col . ': ' . $val . PHP_EOL . '<br />';
 

Per ottenere altriformati,cambia semplicemente ARRAY_Ain base a documentazioneper $wpdb->get_results() . La risposta di Pippin è appropriataper lamaggiorparte degli usi degli oggetti.

Per utilizzare una riga comematriceindicizzatanumericamente

 $rows =  $wpdb->get_results( 'SELECT * FROM `tbl_name` WHERE `id` = '.$obj_id , ARRAY_N);
foreach($rows as $row){  $obj=$row; break; }

//Usage
foreach($obj as $col_value) echo $col_value . ' ';
 

Per utilizzare una rigain un array le cui chiavi sono la chiaveprimaria del database (spesso una colonna id). Forsepiùefficiente delmetodo degli array associativi.

 $rows =  $wpdb->get_results( 'SELECT * FROM `tbl_name` WHERE `id` = '.$obj_id ,  OBJECT_K);
$obj = $rows[ $obj_id ];

//Usage

$something = $obj->column_name;

//Remember you can loop over objects too
foreach($obj as $col => $val)
    echo $col . ': ' . $val . PHP_EOL;
 

To use as an associative array:

$obj=[];
$rows =  $wpdb->get_results( 'SELECT * FROM `tbl_name` WHERE `id` = '.$obj_id , ARRAY_A);
foreach($rows as $row){  $obj=$row; break; }

// $obj is now the selected row if a match was found

Usage

$something = $obj['column_name'];
foreach($obj as $col => $val)
    echo $col . ': ' . $val . PHP_EOL . '<br />';

To get other formats, simply change ARRAY_A based on the documentation for $wpdb->get_results(). Pippin's answer is appropriate for most object use.

To use one row as an numerically indexed array

$rows =  $wpdb->get_results( 'SELECT * FROM `tbl_name` WHERE `id` = '.$obj_id , ARRAY_N);
foreach($rows as $row){  $obj=$row; break; }

//Usage
foreach($obj as $col_value) echo $col_value . ' ';

To use one row in an array whose keys are the primary key from your database(often an id column). Possibly more efficient than the associative array method.

$rows =  $wpdb->get_results( 'SELECT * FROM `tbl_name` WHERE `id` = '.$obj_id ,  OBJECT_K);
$obj = $rows[ $obj_id ];

//Usage

$something = $obj->column_name;

//Remember you can loop over objects too
foreach($obj as $col => $val)
    echo $col . ': ' . $val . PHP_EOL;

Questo codicefunzionaperfettamenteperme:

 global $wpdb;
$table_name = "my_table_name";
$myrows = $wpdb->get_results( "SELECT `id`, `name` FROM ".$table_name);
    foreach ($myrows as $details) {
      echo $details->id;
      echo $details->name;}    
 

This code work perfect for me:

global $wpdb;
$table_name = "my_table_name";
$myrows = $wpdb->get_results( "SELECT `id`, `name` FROM ".$table_name);
    foreach ($myrows as $details) {
      echo $details->id;
      echo $details->name;}